LT1317B Datasheet PDF | Linear Technology

Linear Technology LT1317B

The LT1317B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The LT1317/LT1317B contain an internal low-battery detector with a 200mV reference that stays alive when the device goes into shutdown. The internal NPN power switch handles a 500mA current with a voltage drop of just 300mV.

Part No.	LT1317B
Datasheet	LT1317B Download
Manufacturer	Linear Technology
Description	Micropower/ 600kHz PWM DC/DC Converters
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FEATURES

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DESCRIPTION

The LT ®1317/LT1317B are micropower, fixed frequency step-up DC/DC converters that operate over a wide input voltage range of 1.5V to 12V. The LT1317 features automatic shifting to power saving Burst ModeTM operation at light loads. High efficiency is maintained over a broad 300µA to 200mA load range. Peak switch current during Burst Mode operation is kept below 250mA for most operating conditions which results in low output ripple voltage, even at high input voltages. No-load quiescent current of the LT1317 is 100µA and shuts down to 30µA. The LT1317/LT1317B are available in MS8 and SO-8 packages. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation. s s s 100µA Quiescent Current Operates with VIN as Low as 1.5V 600kHz Fixed Frequency Operation Starts into Full Load Low-Battery Detector Active in Shutdown Automatic Burst Mode Operation at Light Load (LT1317) Continuous Switc...